A new hair straitening product is reacted with keratin in a coffee cup calorimeter. There were 45 g ofwater in the calorimeter and the temperature changed from 23 °C to 32 °C over the course of thereaction.In this reaction the system would be defined asbe defined as[Select][Select][Select]く.The reaction [Select]くthe surroundings wouldheat and is

To calculate the heat absorbed by the water in the calorimeter, we can use the formula: Q=m×c×ΔT…

Answered: A new hair straitening product is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Similar questions

A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. In an experiment, a 0.8608 g sample of glutaric acid (C3HgO4) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.029x103 g of water. During the combustion the temperature increases from 25.01 to 27.84 °C. The heat capacity of water is 4.184 J gl°c-!. The heat capacity of the calorimeter was determined in a previous experiment to be 839.5 J°C. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of glutaric acid based on these data. C;HgO4(s) + 50,(g) 4 H,O(1) + 5 CO,(g) + Energy Molar Heat of Combustion = kJ/mol
4 Having just invented a new type of calorimeter, Dr. Campbell needs to determine the heat capacity of the calorimeter. She carries out the following experiment to do this: She puts 20.0 grams of water in her empty calorimeter and it is allowed to stabilize at a temperature of 25.0ºC. She then adds 32.035 grams of water at a temperature of 83.2ºC to the calorimeter. After a few minutes the final temperature of the calorimeter stabilizes at 41.6ºC. Based on this experiment, what is the heat capacity of her calorimeter assuming units of J/ºC? Enter your answer with at least 3 sig figs.
A 21.42g sample of an unknown metal was heated to 99.5ºC, and the added to 50.00g of water contained in a foam coffee cup. The initial temperature of the water was 20.5ºC, and the final temperature of the metal and water was 25.1ºC. The calorimeter constant for the coffee-cup calorimeter was 13.5 J/ºC. What was the specific heat of the metal? * the answer is 0.64 J/gºC, but I need to know how to get there
A researcher studying the nutritional value of a new candy places a 4.90 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.61 °C. If the heat capacity of the calorimeter is 48.50 kJ-K-, how many nutritional Calories are there per gram of the candy?
make sure that the answer is in the correct number of significant digits
A researcher studying the nutritional value of a new candy places a 6.00 g6.00 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.89 ∘C.2.89 ∘C. If the heat capacity of the calorimeter is 45.80 kJ⋅K−1,45.80 kJ⋅K−1, how many nutritional Calories are there per gram of the candy?
A student has a coffee-cup calorimeter with 50.0 g of water at 21.5oC. They introduce 15.525 g of magnesium metal initially at 100.0oC. The final temperature of the calorimeter came to 27.2oC. What is the value of T magnesium in kelvin?
A 9.323 g sample of metal at 99.15 °C was placed in a calorimeter containing 35.5 g of water 19.42 °C. The temperature of the water in the calorimeter rose to 22.67 °C. What is the speci heat of the metal? (s of water is 4.184 J/(g °C))
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or In the laboratory a general chemistry student finds that when 3.38 g of CuCl,(s) are Styrofoam lid dissolved in 114.10 g of water, the temperature of the solution increases from 25.37 to 27.99 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.60 J/°C. Nested Styrofoam cups Based on the student's observation, calculate the enthalpy of dissolution of CuCl2(s) in kJ/mol. - Reaction occurs in Assume the specific heat of the solution is equal to the specific heat of water. solution. AHdissolution kJ/mol kc Cengage Ln
A researcher studying the nutritional value of a new candy places a 4.90 g4.90 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.44 ∘C.2.44 ∘C. If the heat capacity of the calorimeter is 42.50 kJ⋅K−1,42.50 kJ⋅K−1, how many nutritional Calories are there per gram of the candy?

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